*{
    padding:0px;
    margin:0px;
}
html,body,#app{
    width:100%;
    height:100%;
}
body{
    background-color: #f5f5f5;
}
ul,ol{
    list-style: none;
}
a{
    text-decoration: none;
}
img{
    display: block;
}

/* 版心 */
.main{
    min-width: 320px;
    max-width: 750px; 
    margin: 0 auto;
    padding-bottom: 60.8px;
}

h1,h2,h3,h4,h5,h6{
    font-weight: normal;
}